Tracing water vapor and ice during dust growth

Abstract

The processes that govern the evolution of dust and water (in the form of vapor or ice) in protoplanetary disks are intimately connected. We have developed a model that simulates dust coagulation, dust dynamics (settling, turbulent mixing), vapor diffusion, and condensation/sublimation of volatiles onto grains in a vertical column of a protoplanetary disk. We employ the model to study how dust growth and dynamics influence the vertical distribution of water vapor and water ice in the region just outside the radial snowline. Our main finding is that coagulation (boosted by the enhanced stickiness of icy grains) and the ensuing vertical settling of solids results in water vapor being depleted, but not totally removed, from the region above the snowline on a timescale commensurate with the vertical turbulent mixing timescale. Depending on the strength of the turbulence and the temperature, the depletion can reach factors of up to $\sim 50$ in the disk atmosphere. In our isothermal column, this vapor depletion results in the vertical snowline moving closer to the midplane (by up to 2 gas scale heights) and the gas-phase C/O ratio above the vertical snowline increasing. Our findings illustrate the importance of dynamical effects and the need for understanding coevolutionary dynamics of gas and solids in planet-forming environments.

arXiv commentAccepted for publication in The Astrophysical Journal

References in corpus (56)

• Spectral Energy Distributions of T Tauri Stars With Passive Circumstellar Disks
• Streaming Instabilities in Protoplanetary Disks
• The effects of snowlines on C/O in planetary atmospheres
• A simple model for the evolution of the dust population in protoplanetary disks
• Coagulation, fragmentation and radial motion of solid particles in protoplanetary disks
• Dust coagulation in protoplanetary disks: a rapid depletion of small grains
• Accretion Disks around Young Objects. I. The Detailed Vertical Structure
• Particle Stirring in Turbulent Gas Disks: Including Orbital Oscillations
• The outcome of protoplanetary dust growth: pebbles, boulders, or planetesimals? I. Mapping the zoo of laboratory collision experiments
• Accretion Disks Around Young Objects. III. Grain Growth
• Closed-form expressions for particle relative velocities induced by turbulence
• The effect of dust settling on the appearance of protoplanetary disks
• Rapid Coagulation of Porous Dust Aggregates Outside the Snow Line: A Pathway to Successful Icy Planetesimal Formation
• Dynamics of Solids in the Midplane of Protoplanetary Disks: Implications for Planetesimal Formation
• The Evolution of the Water Distribution in a Viscous Protoplanetary Disk
• The stickiness of micrometer-sized water-ice particles
• Photodesorption of Ices II: H2O and D2O
• Sintering-induced Dust Ring Formation in Protoplanetary Disks: Application to the HL Tau Disk
• Detection of the Water Reservoir in a Forming Planetary System
• Simulation of the Formation and Morphology of Ice Mantles on Interstellar Grains
• Fluffy dust forms icy planetesimals by static compression
• How to form planetesimals from mm-sized chondrules and chondrule aggregates
• Dust size distributions in coagulation/fragmentation equilibrium: Numerical solutions and analytical fits
• Dust coagulation in protoplanetary disks: porosity matters
• H2O and OH gas in the terrestrial planet-forming zones of protoplanetary disks
• Imaging the water-snow line during a protostellar outburst
• Material enhancement in protoplanetary nebulae by particle drift through evaporation fronts
• Volatile carbon locking and release in protoplanetary disks. A study of TW Hya and HD 100546
• The thermal structure and the location of the snow line in the protosolar nebula: axisymmetric models with full 3-D radiative transfer
• The Effect of the Radial Pressure Gradient in Protoplanetary Disks on Planetesimal Formation
• Formation of Earth-like Planets During and After Giant Planet Migration
• Can dust coagulation trigger streaming instability?
• The chemical history of molecules in circumstellar disks. II. Gas-phase species
• Opacity of fluffy dust aggregates
• Radiative transfer models of mid-infrared H2O lines in the Planet-forming Region of Circumstellar Disks
• C/O and Snowline Locations in Protoplanetary Disks: The Effect of Radial Drift and Viscous Gas Accretion
• Direct imaging of the water snow line at the time of planet formation using two ALMA continuum bands
• A representative particle approach to coagulation and fragmentation of dust aggregates and fluid droplets
• Erosion and the limits to planetesimal growth
• The outcome of protoplanetary dust growth: pebbles, boulders, or planetesimals? III. Sedimentation driven coagulation inside the snow-line
• Sensitive limits on the abundance of cold water vapor in the DM Tau protoplanetary disk
• Volatile depletion in the TW Hydrae disk atmosphere
• Residence Times of Particles in Diffusive Protoplanetary Disk Environments I. Vertical Motions
• Geometrical Cross Sections of Dust Aggregates and a Compression Model for Aggregate Collisions
• Multiple Carbon monoxide Snow-lines in Disks Sculpted by Radial Drift
• Planetesimal formation via sweep-up growth at the inner edge of dead zones
• Utilitarian Opacity Model for Aggregate Particles in Protoplanetary Nebulae and Exoplanet Atmospheres
• Measurements of water surface snow lines in classical protoplanetary disks
• Erosion of dust aggregates
• External Photoevaporation of the Solar Nebula: Jupiter's Noble Gas Enrichments
• A method for coupling dynamical and collisional evolution of dust in circumstellar disks: the effect of a dead zone
• Understanding the water emission in the mid- and far-IR from protoplanetary disks around T~Tauri stars
• Dust diffusion and settling in the presence of collisions: Trapping (sub)micron grains in the midplane
• The Phases of Water Ice in the Solar Nebula
• Mid-IR spectra of Pre-Main Sequence Herbig stars: an explanation for the non-detections of water lines
• On water ice formation in interstellar clouds

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• Planetesimal formation starts at the snow line
• Astrochemistry and compositions of planetary systems
• Planetesimal formation near the snowline: in or out?
• Molecules with ALMA at Planet-forming Scales (MAPS) V: CO gas distributions
• Water in star-forming regions (WISH): Physics and chemistry from clouds to disks as probed by Herschel spectroscopy
• Different dust and gas radial extents in protoplanetary disks: consistent models of grain growth and CO emission
• Transport of CO in Protoplanetary Disks: Consequences of Pebble Formation, Settling, and Radial Drift
• Dust Density Distribution and Imaging Analysis of Different Ice Lines in Protoplanetary Disks
• An ALMA Survey of CO isotopologue emission from Protoplanetary Disks in Chamaeleon I
• CO destruction in protoplanetary disk midplanes: inside versus outside the CO snow surface
• Dust growth and evolution in protoplanetary disks
• Unlocking CO Depletion in Protoplanetary Disks I. The Warm Molecular Layer
• Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks
• A survey of C2H, HCN, and C18O in protoplanetary disks
• Constraining Gas-Phase Carbon, Oxygen, and Nitrogen in the IM Lup Protoplanetary Disk
• Connecting planet formation and astrochemistry: A main sequence for C/O in hot-exoplanetary atmospheres
• Planetesimal Population Synthesis: Pebble Flux Regulated Planetesimal Formation
• Chemistry in disks. XI. Sulfur-bearing species as tracers of protoplanetary disk physics and chemistry: the DM Tau case
• Survey of cold water lines in protoplanetary disks: indications of systematic volatile depletion
• The determination of protoplanetary disk masses
• An evolutionary study of volatile chemistry in protoplanetary disks
• The Chemical Inventory of the Inner Regions of Planet-forming Disks -- The JWST/MINDS Program
• Candidate Water Vapor Lines to Locate the H${}_2$O Snowline through High-Dispersion Spectroscopic Observations II. The Case of a Herbig Ae Star
• Molecules with ALMA at Planet-forming Scales (MAPS) XVI: Characterizing the impact of the molecular wind on the evolution of the HD 163296 system
• Multiple paths of deuterium fractionation in protoplanetary disks
• The Evolution Of The Inner Regions of Protoplanetary Disks
• Destruction of refractory carbon grains drives the final stage of proto-planetary disk chemistry
• C${}^{18}$O emission as an effective measure of gas masses of protoplanetary disks
• Collisional evolution of dust and water ice in protoplanetary discs during and after an accretion outburst
• Vertical gas accretion impacts the carbon-to-oxygen ratio of gas giant atmospheres
• Missing water in Class I protostellar disks
• The dry and carbon poor inner disk of TW Hya: evidence for a massive icy dust trap
• Chemical Evolution in a Protoplanetary Disk within Planet Carved Gaps and Dust Rings
• The physics of protoplanetesimal dust agglomerates. X. High-velocity collisions between small and large dust agglomerates as growth barrier
• Chemical evolution in ices on drifting, planet-forming pebbles
• OH mid-infrared emission as a diagnostic of H${}_2$O UV photodissociation. III. Application to planet-forming disks
• Water UV-shielding in the terrestrial planet-forming zone: Implications for carbon dioxide emission
• Resolved molecular line observations reveal an inherited molecular layer in the young disk around TMC1A
• Candidate Water Vapor Lines to Locate the ${\mathrm{H}}_2\mathrm{O}$ Snowline through High-dispersion Spectroscopic Observations. III. Submillimeter ${\mathrm{H}}_2$${}^{16}\mathrm{O}$ and ${\mathrm{H}}_2$${}^{18}\mathrm{O}$ Lines
• Tracking Dust Grains During Transport and Growth in Protoplanetary Disks
• The TW Hya Rosetta Stone Project IV: A hydrocarbon rich disk atmosphere
• Mixing and diffusion in protoplanetary disc chemistry
• Dust Growth and Dynamics in Protoplanetary Nebulae: Implications for Opacity, Thermal Profile and Gravitational Instability
• Testing protoplanetary disc evolution with CO fluxes. A proof of concept in Lupus and Upper Sco
• Locked In Ice: how Pebble Drift and Volatile Entrapment can Significantly Impact Carbon and Oxygen Ratios in Evolving Protoplanetary Discs
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• Dust Transport in Protoplanetary Disks with Wind-driven Accretion
• Vertical CO surfaces as a probe for protoplanetary disk mass and carbon depletion
• Chemical evolution in planet-forming regions with growing grains
• Chemistry During the Gas-rich Stage of Planet Formation
• Dust mass in protoplanetary disks with porous dust opacities
• Laboratory-based sticking coefficients for ices on a variety of small grains analogs
• SHAMPOO: A stochastic model for tracking dust particles under the influence of non-local disk processes
• The physical and chemical properties of planet forming disks
• Protoplanetary Disk Science with the Orbiting Astronomical Satellite Investigating Stellar Systems (OASIS) Observatory
• How leaky? A large parameter study of leaky dust traps to quantify the transport of pebbles and ice in protoplanetary discs
• Linking Outer Disk Pebble Dynamics and Gaps to Inner Disk Water Enrichment
• Multi-scale radiative-transfer model of the protoplanetary disc DoAr 44
• Comets in context: Comparing comet compositions with protosolar nebula models
• Protoplanetary Disk Chemistry
• HCN snowlines in protoplanetary disks: constraints from ice desorption experiments